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Dentition as indicative of the Age 
At two months old the temporary central incisors are fully 
developed, and there are signs of the eruption of the lateral 
temporary incisors, which generally pierce the gums soon after 
two months. The first temporary molar is now nearly level 
with the second. 
Fig. 43. — Incisors and Molars of Pig at one month. 
B. Molars. 
At three months old the pig has the temporary set of teeth 
fully developed, the lateral incisors by this time being nearly 
level with the centrals. The temporary corner teeth and the 
tusks are further removed from each other than they were at 
birth, owing to the growth of the jaw. In Fig. 44 the state of 
the teeth at three months old is indicated. 
Excepting the natural growth of the jaws, in common with 
other parts, no changes occur which will assist the examiner 
in judging the age of the young pig until the age of five 
months is reached. At this time there are evident signs of the 
cutting of the pre-molars ; and also the fourth molar, which is 
the first permanent tooth seen behind the temporary teeth. 
The woodcut (Fig. 45) shows the state of dentition at the age 
of six months. 
As a large number of pigs are entered at Agricultural 
Exhibitions at the age of between five and six months, it is 
necessary to devote particular attention to the signs which are 
exhibited by the teeth of the pig at this period ; and the 
inspector is particularly required to remember that the animal 
